Capturing audio from KKbox

[las99]

Hello guys, I am trying to capture one song from KKBOX but I am facing some problems.
I already installed the program and made an account.
When I opened it in KKBOX, I started URLSnooper and it gave me this list of URLs:

http://cdn-akamai.my.audio.kkbox.com.tw/201307/094pZOwjnzoomm9VyqkMWpQlXTmxV8SXKAcmocUCeJ2Dky3dVms=?__gda__=1423664068_19e12f049e903bfe5bfa459cb45eaa29

I guess that the last one is the desired media file, when I copied it to my web browser it downloaded mp3 file (~5MB), but I cannot play it (I tried twice and it gave me the same weird empty 5MB mp3 file)
Using Livestreamer, I got this:

http://i58.tinypic.com/30ue3oj.jpg

My question is how can I capture that media file? (not recording because I cannot do it in my computer)
Thanks to anyone who can help

[hasomaso]

found only that

http://fs.kkbox.com.tw/sps.php?content_id=C6nv8135.K32jOeN2-eT30PL&mtime=&mode=mp3

[las99]

That's the preview link. I already knew it.
My question is about the last link (akamai audio) in the list, can I grab it using rtmpdump? What is the exact command to do so?